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Boost problem *** UPDATE ***

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Old Feb 22, 2017 | 09:15 PM
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  #61  
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Well there's a waste of 55 bucks. New MAP and no change. Boost still drops off and fluctuates. Anyone have any other ideas before I toss this thing off a cliff. Lol
 
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Old Feb 22, 2017 | 09:22 PM
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From: Bozeman MT
Last ditch before starting all over - unplug the MAF and test drive.
 
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Old Feb 22, 2017 | 10:01 PM
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Still possible it's EBP related. I realize it's only 6 months old, but need to confirm it's working properly
 
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Old Feb 22, 2017 | 10:13 PM
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From: Bozeman MT
Originally Posted by navistarnut
Still possible it's EBP related. I realize it's only 6 months old, but need to confirm it's working properly
Which means we need to see MAP, BARO and EBP at Key on engine off, they should all read ambient pressure. Then again at idle. Then again under acceleration - don't crash the truck.
 
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Old Feb 23, 2017 | 12:25 AM
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Originally Posted by Copper.Farm
Last ditch before starting all over - unplug the MAF and test drive.
How would the MAF have any affect on boost being erratic?
 
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Old Feb 23, 2017 | 12:29 AM
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Originally Posted by Copper.Farm
Which means we need to see MAP, BARO and EBP at Key on engine off, they should all read ambient pressure. Then again at idle. Then again under acceleration - don't crash the truck.
I'll post up those numbers when I get home from work. I checked them first and they were ok. I even cleaned the EBP tube again last Saturday when I checked all of my connections again. Wiggled all the wires and connections also with no change in numbers useing live data.
 
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Old Feb 23, 2017 | 12:37 AM
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I love getting responses late at night. I work 3rd shift so it's nice to see that I'm not the only one up. Lol
 
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Old Feb 23, 2017 | 01:01 AM
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Originally Posted by Will Bite
How would the MAF have any affect on boost being erratic?
It was something I saw today on a gas motor, I know on some of these the calibration does not use - this is a complete guess
 
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Old Feb 23, 2017 | 01:04 AM
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Originally Posted by Copper.Farm
It was something I saw today on a gas motor, I know on some of these the calibration does not use - this is a complete guess
I seen a video from diesel tech Ron he said the later 6.0s the mass air was written out.
 
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Old Feb 23, 2017 | 01:45 AM
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From: Spanaway
But you still have a temp sensor in that package.
That helps with the charge density.
The best way to check things would be with IDS and
to a turbo test.

I did not catch the pre-test baseline.

Give it a few to upload.
 
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Old Feb 23, 2017 | 05:48 AM
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And let's try cleaning IAT1 and IAT2.
 
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Old Feb 23, 2017 | 06:14 AM
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KOEO
 
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Old Feb 23, 2017 | 06:17 AM
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IDLE




 
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Old Feb 23, 2017 | 06:19 AM
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HIGH IDLE 2500RPM




 
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Old Feb 23, 2017 | 06:20 AM
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WOW...... didn't know the pictures would be so big.
 
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